Using MODIS metadata in R

Question

I am working with MODIS 1b Data in R, and converted the HDF files into tiffs. They load and plot correctly.

I am now trying to convert the values of corrected_counts_scale and corrected_counts_offset to dn** as described in the User Guide.

This question describes how to read this information using the CMD point. Is there a way to do this using R?

** edit - to be clear that I am not trying to use the Tiff files directly to access the attributes.

OverArch · Accepted Answer · 2018-11-14 13:17:55Z

1

Please go through this page:

You need to read your HDF files for the values as tiff will not have this metadata.

answered Nov 14, 2018 at 13:17

OverArch

1168 bronze badges

Thanks, yes I have tried this, however - cran.r-project.org/src/contrib/ncdf4_1.15.tar.gz - returns a 404 error so there is no way to download the package with hdf4 functionality included. #
– Ollie Perkins
Commented Nov 14, 2018 at 13:27
You should be able to use install.packages("ncdf4") to install the package.
– JonasV
Commented Jun 19, 2020 at 14:12
If you add both the raster and ncdf4 packages into the working R environment you can read hdf4 raster files using raster or stack.
– Jeffrey Evans
Commented Feb 18, 2021 at 22:41

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